You're dead on man! The large spacing outside of the main 8 is the dead giveaway. This is exactly the same stick Fed was messing around with. Even the space right above the handle in the throat is the larger design like the 90's are where you can put your index into and helicopter the thing.

YES, he will be testing several new models too, not just that one he's been using. He will likely play with them in coming China tournaments.
Lets all cross our fingers and hope Roger finds that Perfect racket that works for him and comes back and win the Aussie open

He's still using his old one right? Maybe he'll make the switch in the off season when he's playing all the expos.